Axle dies



R. G. HOUSDORFER AXLE DIES ov. a, 1923. www2 Filed April 21. 1921Patented Nov. 6, i923.

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REINHOLD e. Housnoarnn, or DETROIT, MiCHIGAN.

Axim

appiication mea april 2i,

To all whom t may concern.'

Be it known that I, REINHOLD G. I-IoUs- DORFER, a citizen of the UnitedStates of America, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements in AxleDies, of which the following is a specification, reference being hadtherein to the accompanying drawings.

In forming axles with the dies disclosed in my Patent No. 1,050,460,granted J an. 14, 1913, I had difficulty in preventing the formation ofa in, on the second upset or operation, which, when formed, is hard toremove. To preventthe formation of this iin and make a better axle isthe main object of this invention, which is accomplished in part, bydies of novel construction.

Another object of this invention is to form the ends of an axle so thatthe grain of theY metal will be towards the ends of the yoke or forkmembers so as to resist, as much as possible, breakage of the axlemembers. This object is attained by constructing the forming apparatusso that when the ends of the axle are upset and formed, the metal iscaused to iiow in directions which avoid any abrupt bends, thuspreserving as much as possible, the tensile strength of the metal so asto resist to a high degree the stresses and strains to which the forksor yokes of the axle may be subfected when forming part of a vehicle.

A further object lof my invention is to provide dies for producing anembryoable end with a degree of accuracy that insures a minimum amountof waste, expedite other operations to complete the axle, and asillustrating a preferred embodiment of my invention, I will describe,with the assistance of the accompanying drawings, dies as now Ypracticed by me.

In the drawings,

Figure 1 is a side elevation of an embryo end of an axle bar or blankshowing the same as formed by the dies;

Fig. 2 is an end view of dies showing the portions thereof used for theformation of an embryo axle end;

Fig. 3 is a plan of the same; Y

Fig. 4 is an end view of the dies, and

Fig. 5 is a side elevation of oneof the dies showing punches or movabledies relative thereto.

'Io make the axle end by three distinct inns.

1921. Serial No. 463,132.

operations which may be successively carried on and thus insure aneconomical and expeditious production, it is necessary to use two diesgenerally designated A and B and these dies may be movable relative toeach other, or the die A considered stationary and the die B as movable.In either instance, the movement is sufiicientto permit of a piece ofstock, in the form of a bar 7, as shown in Figs. 1, 2 and 3, beingplaced between the dies. The die A has its upper innerv edge providedwith a longitudinal recess 8 to receive the bar 7 so that said bar maybe clamped in position, with one end of the bar protruding from thedies, when said dies are brought together. At that end of the die A fromwhich the extremity of the bar 7 protrudes the recess 8 is fiaredorenlarged, as at 9 with an overhanging lip or ledge 10, and this portionof the recess 8 is concave, fromV the lip or ledge 10 to the body of thedie.

The die B extends beyond the die Avand has an end thereof recessed, asat 11, in a plane with the recess 8 and pivotally mounted in said recessby a pin 12 ,or other pivotal means is an upsetting tool or die 13having a head 14 protruding from the inner face of the die B, adapted toimpinge against the protruding end of the bar 7 when the dies A and Bare brought together. The tool or die 13 is pivoted intermediate itsends so that its end 15 may abut the die B and limit the outwardmovement of the head 14, which is maintained normallyin its outermostposition by a coiled expansion spring 16 placed in confronting recesses17 in the die B and the tool 13. The head 14 of the tool 13 has aconcave forming face 18, and assuming that the bar 7 has been placed inthe recess 8 of the die A and the die B shifted toward the bar, then thehead A14 of the tool impinges against the protrudin end of the bar andforces it into the iare end 9 of the recess 8. The protruding end of thebar is therefore disposed at an angle to the clamped portion of the bar7 and the head 14 of the tool 13 is practically in the axis of said bar.The head 14, which is still in an open or extended position, may now bestruck by a punch or blow head 19 and forced inwardly against theangularly disposed end of the bar to upset the same.

In the first part of this operation, when the protruding end of the baris bent at an angle to the clamped body of the bar, the 11o Y shapeimparted thereto along the lines sug` figure it will be n gested in Fig.l. 1 In this observed. that the end of the bar isnow4 disposed at anobtuse angle relative to the body of the bar and that at the inner bendthe bar has received arounded surface 2O and that the outer bend arounded surface 2l-whichv has also been concaved, as lat 22, thusreducing the cross sectional area at the bend of the bar, leavingaprotuberance 23 that ulti- .mately results in a lower fork member of theaxle, when the embryo axle end is subjected to additional operations.

The .first operation may be considered as having been performed at thetop or in the upper portions of the dies A and B and the additionaloperations take place between the dies A and B below the location of thefirst l operation.

What I claim is l. -Means for partially forming an axle `from a blank,Vcomprising dies between which the blank may be held, anfinstrumentalitycarried by one-of said dies adapted to bend the blank when the dies arebrought together and means adapted 'to Y impinge against theinstrumentality to further shape the open end of the blank held by saiddie. Y

2.' Axle forming nieans comprising dies adapted tovhold ablank'therebetween, and

means adapted to reduce the ,end ot' the blank between the dies7 saidmeans includ-V ing an instrumentality which assumes the position aliningwith said blank to cause a reduction Vat one side of the axis of theblank. Y s

3. Axle forming means as in claim Y2, characterized by theinstrumentality being disposed to bend the blank the end thereof.

4. Axle forming means" as in claim 2,

characterized by the instrumentality having a configuration to form anembryo fork.

dies between whichY a blankfinayzbe held, said dies having theconfronting faces .there of provided with recesses into which the blankextends, one of the recesses having a flared-end, and a tool in opposedrelation to the flared end of t-he die recesses7 said tool having aconfiguration which co-oper.

ates with the flared end of the die recess in imparting anembryo forkshape to the end of the blank.

prior to reducing 5. Means for'forrning an axle, comprisingrv Intestimony whereof I affixed my .signer ture in presence of twowitnesses.

' anim-ioni) e. Housnonrnn'. Y Witnesses:

' KARL I-I. BUTLER, ANNA M. Dorm.

